Size effect in the debonding failure of FRP strengthened beams

Efrat Ben Dror, Oded Rabinovitch

Research output: Contribution to journalArticlepeer-review

Abstract

The paper studies the potential size effect in the debonding failure of beams strengthened with fiber reinforced polymer composite materials. For that purpose, a framework for the debonding analysis of such large-scale strengthened beams is developed. The model combines high order modeling with fracture analysis and crack growth simulation through equilibrium paths. The analysis overcomes the inherent problem of length scales variation and its computational implications through a one-dimensional high order extended finite element approach. The results reveal a size effect with intermediate crack debonding stability characteristics that change from small scale beams to large scale ones.

Original languageEnglish
Pages (from-to)161-181
Number of pages21
JournalEngineering Fracture Mechanics
Volume156
DOIs
StatePublished - 1 May 2016

Keywords

  • Debonding process
  • Equilibrium path
  • FRP strengthening
  • Size effect
  • XFEM

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • General Materials Science

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